mirror of
https://github.com/ParticulateFlow/CFDEMcoupling-PFM.git
synced 2025-12-08 06:37:44 +00:00
63 lines
1.9 KiB
Plaintext
63 lines
1.9 KiB
Plaintext
"CFDEMproject Website"_lws - "Main Page"_main :c
|
|
|
|
:link(lws,http://www.cfdem.com)
|
|
:link(main,CFDEMcoupling_Manual.html)
|
|
|
|
:line
|
|
|
|
smoothingModel temporalSmoothing command :h3
|
|
|
|
[Syntax:]
|
|
|
|
Defined in dictionary depending on the application.
|
|
|
|
smoothingModel temporalSmoothing;
|
|
temporalSmoothingProps
|
|
\{
|
|
lowerLimit number1;
|
|
upperLimit number2;
|
|
refField referenceField;
|
|
gamma smoothingStrength;
|
|
\} :pre
|
|
|
|
{number1} = scalar fields will be bound to this lower value :ulb,l
|
|
{number2} = scalar fields will be bound to this upper value :l
|
|
{referenceField} = reference to the un-smoothed field required for the relaxation operation :l
|
|
{smoothingStrength} = control parameter for the smoothing, lower value yields stronger smoothing (gamma = 1 results in an equal contribution from the un-smoothed and smoothed fields) :l
|
|
:ule
|
|
|
|
[Examples:]
|
|
|
|
temporalSmoothingProps
|
|
\{
|
|
lowerLimit 0.1;
|
|
upperLimit 1e10;
|
|
referenceField "p";
|
|
gamma 1.0;
|
|
\} :pre
|
|
|
|
[Description:]
|
|
|
|
The {temporalSmoothing} model is a smoothing model that utilizes temporal
|
|
relaxation of a desired quantity. This model can be used to filter out
|
|
high-frequency fluctuations (e.g. numerical noise) controlled via the control
|
|
parameter gamma.
|
|
Note that this model does NOT smooth the calculated fields, instead smoothing is
|
|
performed on a separate (smooth) field which uses the calculated (un-smooth)
|
|
field as a reference.
|
|
Thus its usage is limited and CANNOT be used to smooth the exchange fields
|
|
similar to other smoothing models.
|
|
For further information see Vångö et al., "Unresolved CFD-DEM modeling of
|
|
multiphase flow in densely packed particle beds", Appl. Math. Model. (2018).
|
|
|
|
[Restrictions:]
|
|
|
|
This model does NOT smooth the calculated fields and can therefore NOT be used
|
|
as a general smoothing model to smoothen the exchange fields.
|
|
Attempting this will generate an error.
|
|
|
|
[Related commands:]
|
|
|
|
"smoothingModel"_smoothingModel.html
|
|
|